North
Date TimeNO2O3SO2COPM10PM2.5
2023-03-21 00:0014.184.61.3480.528.315.4
2023-03-20 23:0014.089.31.3482.824.817.6
2023-03-20 22:0016.087.21.1555.724.016.6
2023-03-20 21:0020.686.51.3574.125.817.5
2023-03-20 20:0053.755.31.2911.725.316.2
2023-03-20 19:0033.974.90.9596.929.017.3
2023-03-20 18:0028.785.21.2533.129.318.8
2023-03-20 17:0033.485.71.3518.234.517.1
2023-03-20 16:0027.587.11.2573.542.320.0
2023-03-20 15:0024.494.21.2474.144.122.4
2023-03-20 14:0018.6100.81.2475.843.417.2
2023-03-20 13:0026.785.90.9543.636.113.5
2023-03-20 12:0026.581.80.9527.530.518.9
2023-03-20 11:0034.571.01.0557.127.919.5
2023-03-20 10:0031.573.10.9609.824.714.9
2023-03-20 09:0044.258.00.7576.619.415.7
2023-03-20 08:0034.167.41.1521.313.6-
2023-03-20 07:0022.479.20.9481.711.110.5
2023-03-20 06:0010.387.10.8442.211.38.9
2023-03-20 05:007.990.80.8450.210.98.6
2023-03-20 04:007.993.60.7480.27.1-
2023-03-20 03:007.596.10.8479.85.0-
2023-03-20 02:008.995.50.7468.64.7-
2023-03-20 01:0010.496.90.7481.99.97.5
Remarks:

(1) Time shown is in Hong Kong time.

(2) NO2 - nitrogen dioxide, O3 - ozone,
     SO2 - sulphur dioxide, CO - carbon monoxide,
     PM10 - respirable suspended particulates,
     PM2.5 - fine suspended particulates

(3) Concentration shown is in µg/m3.

(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.

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Last revision date: 00:07 21-03-2023